CN101936846B - Anti-secondary hit device of drop hammer impact tester - Google Patents
Anti-secondary hit device of drop hammer impact tester Download PDFInfo
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- CN101936846B CN101936846B CN200910054273A CN200910054273A CN101936846B CN 101936846 B CN101936846 B CN 101936846B CN 200910054273 A CN200910054273 A CN 200910054273A CN 200910054273 A CN200910054273 A CN 200910054273A CN 101936846 B CN101936846 B CN 101936846B
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Abstract
The invention relates to a device of a drop hammer impact tester, belonging to the field of experimental equipment. An anti-secondary hit device of the drop hammer impact tester comprises a support saddle, a drop hammer guide rail (2) and a drop hammer (3) on the support saddle and is characterized in that the support saddle is provided with a drop hammer falling-preventing mechanism (4), the vertical height of the drop hammer falling-preventing mechanism (4) is higher than the height of a sample (1) placed on the horizontal plane of the support saddle, the drop hammer falling-preventing mechanism (4) comprises a control unit (41) and a transverse motion unit (42), the transverse motion unit (42) is driven by the control unit (41) to move in reciprocating way along the horizontal plane of the drop hammer (3), one end of the transverse motion unit (42) is moved inside a mapping range of the drop hammer (3) on the horizontal plane, and the other end is moved outside the mapping range of the drop hammer (3) on the horizontal plane. When the drop hammer impact sample on the tester back-bounces, the anti-secondary hit device quickly extends below the drop hammer to prevent secondary hit of the drop hammer on the sample and ensures accuracy of a testing result.
Description
Technical field
The present invention relates to a kind of device of drop hammer impact testing machine, relate in particular to and be used for falling weight impact test and prevent that sample is by the device of two-hit.
Background technology
When traditional drop hammer impact testing machine was done experiment, normally dropping hammer discharged from a certain test setting height, and along guide rod freely falling body normal of impact sample, test sample is obtained the data that need then.Because the material of sample is different, the difference of test method, drop hammer impact testing machine also is divided into multiple now.When these drop hammer impact testing machines in falling weight impact test, drop hammer fall hit sample after because it is different with the material of the collision of sample and sample to drop hammer, drop hammer sometimes can the bounce-back of generation certain altitude after formation two-hit even three strike samples.
For example sample is a metal material; According to the requirement of the nil-ductility temperature drop-weight test method of GB6803-86 ferritic steel, present drop hammer impact testing machine mainly comprises bearing, the guide rail and dropping hammer and composition such as hoisting gear of dropping hammer, and sample lies in a horizontal plane in and drops hammer down; The freely falling body impact specimen that drops hammer is surperficial; Viewing test result after impact is accomplished, through the adjustment chilling temperature, repeatedly impulse ratio draws the nil-ductility temperature of trial target than test findings.Fall the surface of first strike sample when dropping hammer after; Because collision and sample are needed as displacement up and down can not be arranged; Fall the formation two-hit once more even repeatedly hit sample after will making the bounce-back that produces certain altitude of dropping hammer; The observations of like this sample being impacted not is very accurate, and along with the accuracy requirement of falling weight impact test improves constantly, the influence of repeatedly impacting more and more can not be out in the cold.
Summary of the invention
Technical matters to be solved by this invention provides the anti-two-hit device of a kind of drop hammer impact testing machine, falls the back bounce-back and falls the secondary that sample is formed again or repeatedly hit the defective that influences the test figure precision thereby solve to drop hammer in the prior art.
Technical scheme of the present invention is following:
A kind of drop hammer impact testing machine is prevented the two-hit device; Comprise the guide rail 2 and drop hammer 3 of dropping hammer on bearing, the bearing; It is characterized in that: whereabouts blocking mechanism 4 drops hammer on bearing; Said vertical height of dropping hammer whereabouts blocking mechanism 4 is higher than the sample that is placed on the bearing surface level 1 height, and the said whereabouts blocking mechanism 4 that drops hammer comprises control module 41 and transverse movement unit 42, the surface level to-and-fro movement under 3 of dropping hammer in control module 41 driving lower edges of said transverse movement unit 42; Move an end to dropping hammer 3 in the mapping scope of this surface level, and the motion other end is to dropping hammer 3 outside the mapping scope of this surface level.
The said whereabouts blocking mechanism 4 that drops hammer has a plurality of.
Said transverse movement unit 42 is the metal slide block, and said control module 41 comprises electromagnet 411 and connecting rod 412, and said connecting rod 412 connects electromagnet 411 and metal slide block, and the metal slide block is positioned at slide block guide rail 413.
Said electromagnet 411 is a direct drive type electro magnet, and said connecting rod 412 is for there being the lever of fulcrum, and lever one end connects the metal slide block, and the other end connects electromagnet 411.
Said lever is divided into two parts by fulcrum, also is connected with lever in the part that connects electromagnet 411 and replys auxiliary spring 414.
Beneficial effect
The present invention has increased the whereabouts blocking mechanism that drops hammer on existing testing machine, when rebounding behind the drop impact sample that drops hammer, can stretch out fast and stop the strike again of dropping hammer to sample, guaranteed sample to be tested test result accurately.
Description of drawings
Fig. 1 is the synoptic diagram that has drop hammer impact testing machine of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a vertical view of the present invention.
Embodiment
A kind of drop hammer impact testing machine is prevented the two-hit device; Comprise the guide rail 2 and drop hammer 3 of dropping hammer on bearing, the bearing; The whereabouts blocking mechanism 4 that on bearing, drops hammer, shown in accompanying drawing 1, said vertical height of dropping hammer whereabouts blocking mechanism 4 is higher than sample 1 height that is placed on the bearing surface level; The said whereabouts blocking mechanism 4 that drops hammer comprises control module 41 and transverse movement unit 42; The surface level to-and-fro movement under 3 of dropping hammer in control module 41 driving lower edges of said transverse movement unit 42, the end that moves is to dropping hammer 3 in the mapping scope of this surface level, and the motion other end is to dropping hammer 3 outside the mapping scope of this surface level.
The said whereabouts blocking mechanism 4 that drops hammer is arranged on the support parallel with the guide rail 2 of dropping hammer on the bearing, can be symmetrical set, and also can be provided with a plurality of.
The energising of above electromagnet 411 is directly controlled by control system opportunity, receives the signal that drops hammer and at photoelectric sensor, and control system is automatically according to the said whereabouts blocking mechanism 4 that drops hammer of signal enabling of delaying time.Adopt the operation of whole device of control system following: when drop hammer 3 from the test setting height through the releasing order of control system, along the guide rail 2 freely falling body normal of impact samples 1 that drop hammer; Moment after the bounce-back that produces certain altitude behind the surface of the 3 strike samples 1 that drop hammer; The action immediately after the electromagnet 411 controlled systems control energising in the whereabouts blocking mechanism 4 of dropping hammer; Plug, lever, slide block move simultaneously, and slide block is inserted 3 lower ends of dropping hammer, and hold and drop hammer 3; Do not make and hit sample 1 under its secondary falling, this process is accomplished in moment through control system automatically; When sample 1 accomplish once hit after, electric control system will be dropped hammer and 3 is promoted to setting height and stop, whereabouts blocking mechanism 4 outages of dropping hammer this moment make slide block be retracted into initial position under the elastic force of extension spring.Repeat above-mentioned steps then and proceed test.
The support that the whereabouts blocking mechanism 4 that drops hammer belongs to can be done the adjusting of certain altitude up and down, like separated into two parts, and the height set bolt is arranged; Perhaps following of support has spiral, rotatable about.Can tackle the sample of differing heights like this.
Claims (2)
1. a drop hammer impact testing machine is prevented the two-hit device; Comprise the guide rail that drops hammer (2) on bearing, the bearing and drop hammer (3), it is characterized in that: the whereabouts blocking mechanism (4) that on bearing, drops hammer, said vertical height of dropping hammer whereabouts blocking mechanism (4) are higher than the sample (1) that is placed on the bearing surface level highly; The said whereabouts blocking mechanism (4) that drops hammer comprises control module (41) and transverse movement unit (42); Surface level to-and-fro movement under said transverse movement unit (42) drops hammer (3) in control module (41) driving lower edge, the end that moves is to dropping hammer (3) in the mapping scope of this surface level, and the motion other end is to dropping hammer (3) outside the mapping scope of this surface level; The said whereabouts blocking mechanism (4) that drops hammer has a plurality of; Around dropping hammer, be arranged on the support parallel with the guide rail that drops hammer (2) on the bearing, said transverse movement unit (42) is the metal slide block, and said control module (41) comprises electromagnet (411) and connecting rod (412); Said connecting rod (412) connects electromagnet (411) and metal slide block; The metal slide block is positioned at slide block guide rail (413), and said electromagnet (411) is a direct drive type electro magnet, and said connecting rod (412) is for there being the lever of fulcrum; Lever one end connects the metal slide block, and the other end connects electromagnet (411).
2. drop hammer impact testing machine as claimed in claim 1 is prevented the two-hit device, and it is characterized in that: said lever is divided into two parts by fulcrum, also is connected with lever in the part that connects electromagnet (411) and replys auxiliary spring (414).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910054273A CN101936846B (en) | 2009-06-30 | 2009-06-30 | Anti-secondary hit device of drop hammer impact tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910054273A CN101936846B (en) | 2009-06-30 | 2009-06-30 | Anti-secondary hit device of drop hammer impact tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101936846A CN101936846A (en) | 2011-01-05 |
| CN101936846B true CN101936846B (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910054273A Active CN101936846B (en) | 2009-06-30 | 2009-06-30 | Anti-secondary hit device of drop hammer impact tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN101936846B (en) |
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| CN105259056B (en) * | 2015-11-02 | 2018-05-08 | 山东科技大学 | Apply the device that transient state unloads compression stress wave in a kind of large-scale similar experiment system |
| CN105259022B (en) * | 2015-11-02 | 2017-12-01 | 山东科技大学 | One kind prevents the secondary impact device that drops hammer |
| CN105842088B (en) * | 2016-04-27 | 2018-12-04 | 膳魔师（江苏）家庭制品有限公司 | A kind of vertical impact testing machine |
| CN106838945B (en) * | 2016-12-21 | 2018-12-28 | 嘉兴新嘉爱斯热电有限公司 | A kind of Optimization-type boiler environmental protection island system |
| CN107389442B (en) * | 2017-08-28 | 2023-07-14 | 北京沃华慧通测控技术有限公司 | Clamping type secondary impact prevention device and impact testing machine |
| CN107328544A (en) * | 2017-08-28 | 2017-11-07 | 北京沃华慧通测控技术有限公司 | Anti- secondary pulse device and impact test equipment |
| CN108453148A (en) * | 2018-01-31 | 2018-08-28 | 重庆来来来商贸有限公司 | A kind of auto parts machinery auxiliary clamping device |
| CN108760537A (en) * | 2018-05-27 | 2018-11-06 | 山西大学 | A kind of large size drop impact device |
| CN108931447A (en) * | 2018-08-01 | 2018-12-04 | 格力电器（武汉）有限公司 | A kind of shock machine |
| CN110169839A (en) * | 2019-05-29 | 2019-08-27 | 上海塔望智能科技有限公司 | A kind of animal spinal cord injury test macro |
| CN111077028A (en) * | 2019-11-05 | 2020-04-28 | 中国直升机设计研究所 | Impact loading test device |
| CN112683698A (en) * | 2020-12-21 | 2021-04-20 | 西安交通大学 | Tensile impact test stand with medium strain rate for material |
| CN112834155B (en) * | 2021-01-23 | 2023-05-30 | 长安大学 | Magnetic suspension clamping support and method for preventing secondary impact in impact test |
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| CN101936846A (en) | 2011-01-05 |
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Owner name: SHANGHAI HUALONG TEST INSTRUMENTS CORPORATION Free format text: FORMER NAME: HUALONG DETECTOR CO., LTD., SHANGHAI |
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Address after: Chuansha Pudong New Area Town, Shanghai City Sichuan Road No. 389 201202 Patentee after: Shanghai Hualong Test Instruments Co., Ltd. Address before: 201202 Shanghai city Pudong New Area Sichuan Road No. 389 Patentee before: Hualong Detector Co., Ltd., Shanghai |
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Address after: 201202 389 Chuan Wang Road, Chuansha Town, Pudong New Area, Shanghai Patentee after: Hualong Detector Co., Ltd., Shanghai Address before: 201202 389 Chuan Wang Road, Chuansha Town, Pudong New Area, Shanghai Patentee before: Shanghai Hualong Test Instruments Co., Ltd. |